The Thearches - Our orthotic sandals have been custom designed by podiatrists and shoe designers. Thearches sandal was conceived in the wake of many years of frustration with poorly designed, dysfunctional, low-quality orthotic sandals. We have studied the foot structure, out of doctor's data from patients and Ergonomic knowledge, the details to assure that each element meets our standards for Quality, Function and Fit. The Design - The orthotic flip-flops include hand-sewn straps & sofer lining, double sole shock absorption, and slip-resistant footbed, to bring some extra fun and expression to our classically comfortable sandal. The materials and outlook design meet our styles and features. Simplicity, Shock absorption, Durable, Flexibility, Quality. The Footbed - Featuring Thearches technology and orthotic arch support footbed, built-in Orthotics support the arch, deep heel cups provide extra stability. Lightweight, flexible medium-density EVA midsole absorbs shock, design to take the stress off tired feet ankles, knees, and joints; The durable rubber outsoles provide better abrasion resistance and overcome different roads, And provide excellent slip-resistant and friction. The Walking Comfort - Our revolutionary Thearches technology is made for walking and exercise recovery. When you have a long time standing or after workouts on your foot, the stress on your feet, joints & back can translate into fatigue, muscle tightness & pain. You need to put on the Thearches supportive sandals to reduce the stress and help recovery, let tired feet walk comfortably.FINDING YOUR SIZE: The manufactured size is based on European standards. We provide the size range between 36-42 EU and standard/medium shoe size width. For your perfect fit, refer to the sizing chart in the images above! (click "Size Chart"). In general, it's ok to wear a half size up for sandals. In addition, these arch sandals work for all arch types, high arch, fallen arches, flat footedness, or general feet. Wear them and feel the difference!. WALKING COMFORT & RECOVERY: Our revolutionary Thearches technology is made for walking and exercise recovery. When you have a long time standing or taking energetic exercise, the stress on your feet, joints & back can translate into fatigue, muscle tightness & pain. You need to put on the Thearches supportive sandals to reduce the stress and help recovery, let tired feet walk comfortably. DEEP HEEL CUP: Thearches thong sandals are designed with a structured deep U-shaped heel cup. It helps to evenly distribute your feet pressure, improves foot and leg alignment, enhances comfort, and realigns the skeletal system to protect their heel during the severe impact of landing. In other words, it can provide extra support and stability while walking or standing and also prevent sliding and add friction during high impact. ORTHOTIC ARCH SUPPORT: The podiatrist-designed footbed with 1.3inch high and firm foot arch support, relieves foot fatigue or pain caused by prolonged standing or walking, corrects abnormal walking patterns, relieves metatarsalgia, Achilles tendonitis, and helps low back pain. Overall, these ideal orthopedic sandals provide a convenient and extremely soothing solution for those with flat feet, over pronation, high/low arch, common foot pain, arch/heel pain & plantar fasciitis. MATERIAL & DESIGN: The orthotic flip-flops include hand-sewn straps & sofer lining, double sole shock absorption, and slip-resistant footbed, to bring some extra fun and expression to our classically comfortable sandal. The curve of the footbed is designed in accordance with the foot structure, out of doctor's data from patients and Ergonomic knowledge. You'll feel the support for arches and heels is on point, providing better cushioning and long-lasting support for every step. Heel measures approximately 1.3 inches". Rubber sole.